If I already have the DKF S-Pipe with 100 cell cats, what difference, if any, would I gain by swapping cats into resonators? More power? More sound? Flames out the back?
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2014 BMW X5 Sdrive35i F15
2011 BMW 328i E92 LCI
2006 BMW Z4 M Roadster E85
2013 BMW S1000RR K46 R.I.P.
1998 BMW Z3 Roadster 1.9L E36 SOLD
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